Flexible Wiring Board Signal Selection for Smaller Print Heads
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Solution Overview
Problem
The increase in the number of drive signal lines on flexible electric wiring boards due to multiple types of drive signals leads to an expansion of the board width and an increase in the size of the print head.
Innovation Solution
A flexible electric wiring board design that includes a selection unit to select one type of drive signal from multiple types, with drive signal lines having different line widths, and a control signal line to transmit control signals, reducing the overall board width and print head size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple drive signal lines are deployed to transmit different types of drive signals, then the functionality to drive piezoelectric elements with multiple signal types is improved, but the width of the flexible electric wiring board increases
Solution Approach 1:
The patent applies multi-functionality by enabling a single drive signal line to transmit multiple types of drive signals through time-division multiplexing. The selection unit receives control signals that determine which drive signal type is currently being transmitted, allowing one physical line to serve multiple functional purposes and reduce the total number of lines required.
Solution Approach 2:
The patent implements dynamics through the selection unit that dynamically switches between different drive signal types based on control signals. The system transitions from a static one-to-one mapping of signal lines to signal types, to a dynamic many-to-one relationship where a single line adaptively carries different signal types at different times, optimizing space utilization.
2Adaptability or versatility
If the number of drive signal lines is increased to support three or more types of drive signals, then the capability to drive piezoelectric elements with diverse signals is improved, but the size of the print head increases
Solution Approach 1:
The selection unit serves as a universal interface that handles multiple drive signal types through a single transmission channel. By implementing time-division multiplexing, the system allows one physical connection to fulfill multiple functional roles, thereby reducing the overall volume required for signal transmission infrastructure in the print head.
Solution Approach 2:
The patent merges multiple drive signal transmission functions into a single drive signal line by combining them in the time domain. The selection unit consolidates what would traditionally require separate physical lines into one shared line, reducing spatial requirements and print head size while maintaining the ability to transmit diverse signal types.
Data Source
AI summary
In order to reduce a width of a flexible electric wiring board and to downsize a print head, a flexible electric wiring board including: is provided with a selection unit configured to select one type of a drive signal out of a plurality of types of drive signals for driving a piezoelectric element; a plurality of drive signal lines including drive signal lines to transmit the plurality of types of the drive signals to the selection unit, respectively; and a control signal line configured to transmit a control signal to the selection unit in order to select the one type of the drive signal, in which the plurality of types of the drive signal lines have mutually different line widths.